Influence of total parenteral nutrition on tumor growth and polyamine biosynthesis of fibrosarcoma-bearing rats after induced cachexia.

Published

Journal Article

The effect of a protein-free diet (PF) or a restricted intake of chow (RI) and subsequent host repletion with total parenteral nutrition (PF-TPN, RI-TPN) on tumor growth and polyamine metabolism of fibrosarcoma-bearing rats was examined. Host weight was significantly reduced by PF and RI. Tumor growth was reduced in malnourished rats with the PF regimen resulting in the greatest decrease. Rats receiving TPN after 14 days of the RI or PF regimens had higher host weight and plasma albumin levels than malnourished rats. Tumor growth during TPN was evaluated as the percent increase and compared with that of the respective malnourished rats. The percent increase for RI-TPN rats was significantly greater although a trend toward an increase was also evident for PF-TPN rats. Tumor ornithine decarboxylase (ODC) activity and putrescine levels were increased for PF rats and decreased for RI rats while tumor ODC activity was consistently increased by TPN. Tumor growth, ODC activity, and putrescine levels were simultaneously increased only for those rats fed the RI regimen prior to TPN. These results show a disparity in tumor ODC activity, putrescine levels, and tumor growth in malnourished rats. The results of this study suggest that the nutritional origin of cachexia influences the response of the tumor to TPN and emphasizes the importance of considering the methods to induce malnutrition in designing therapuetic regimens.

Full Text

Duke Authors

Cited Authors

  • Grossie, VB; Ota, DM; Ajani, JA; Chang, TH; Patenia, D; Nishioka, K

Published Date

  • September 1988

Published In

Volume / Issue

  • 12 / 5

Start / End Page

  • 441 - 444

PubMed ID

  • 3141639

Pubmed Central ID

  • 3141639

International Standard Serial Number (ISSN)

  • 0148-6071

Digital Object Identifier (DOI)

  • 10.1177/0148607188012005441

Language

  • eng

Conference Location

  • United States